How do tell him to straighten up before I break up with him?

My boyfriend of 6 months has been weird with me recently and I don’t know what to do I recently stayed at his house for almost a month because a relative of mine had Covid and his mom and sister wanted me to stay longer so did he ever since I got back he’s always busy so busy that by the time I can talk to him it’s time to sleep before I left he wanted me to come to the fair with him in September but I talk to him tonight and he said that I stayed to long last time and he didn’t even want to go to the fair anymore but we would go to the pumpkin patch in October now I feel awkward and don’t even want to go to his house anymore and every time I tell him I’m sad he just ignores it because he said he doesn’t want to start problems but it’s the problems he caused and then he get mad that I’m upset then we’re both upset but he has no right to be upset I feel like he’s just manipulating me or something I’m just so done

How do tell him to straighten up before I break up with him?
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